Unless a rule or statute provides otherwise, file and serve documents, briefs, proposed orders, proposed judgments, and other communications before presenting them to the court.
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no document, including briefs, proposed orders and proposed judgments, or other communications, may be presented to the court at any time unless it is first filed with the court and served on all parties.
The requirement is stated in current official court rules and is attached at court scope, not as a personal preference.